Miku'n Pop

This game is like the original Mario Bros (the one with the turtles, crabs and annoying fire balls) but with many different enemies (like penguins and even Pikachu), different structures, many characters (from Vocaloid) with many attacks and boss fights

The boss of the third stage is Meiko, she will appear on screen and will turn big, all of her attacks are heartshapped kisses and she will change the directions when you hit her enough

She is also a playable characters but she only attacks with a castlevania-like whip

Oh, hey! Meiko actually does have a kiss blowing attack while you play as her! And oh my word it is perfectly adorable and hot and nnngh I just wanna hug her. http://www.youtube.com/watch?v=cBY3m4_CVmU Go to about 14:03.

EDIT: IT HAS A SOUND EFFECT. I did some looking and she also does the kiss attack at 4:11 and 4:15! There may be more, too. Iyaaah I love it so much...